US20030193665A1 - Using a laser beam to indicate roller wear - Google Patents
Using a laser beam to indicate roller wear Download PDFInfo
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- US20030193665A1 US20030193665A1 US10/121,149 US12114902A US2003193665A1 US 20030193665 A1 US20030193665 A1 US 20030193665A1 US 12114902 A US12114902 A US 12114902A US 2003193665 A1 US2003193665 A1 US 2003193665A1
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- transport roller
- media transport
- wear
- further comprised
- indicating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
Definitions
- This invention relates to the method and apparatus for indicating roller wear in a media handling device.
- Such structures of this type generally, employ the use of a laser beam that is located adjacent to the media handling device roller. Initially, the roller material obstructs the laser beam. However, when the roller becomes worn out, the roller material no longer obstructs the laser beam and the beam shines on a piece of reflective material that is illuminated when the laser beam contacts it. This illumination will then be seen from the front of the media handling device, such as through the use of an LED.
- the laser beam can also activate an optical sensor that relays information to the user.
- this invention fulfills these needs by providing a method for indicating media transport roller wear, wherein the method is comprised of steps of: impinging a coherent light beam upon a side of a media transport roller; and indicating when the media transport roller has worn down to a predetermined amount by causing the coherent light beam to pass over the media transport roller and interacting with a media transport roller wear indicating means.
- the coherent light beam is a laser beam.
- the media transport roller wear indicating means includes a piece of reflective material and an LED located on the front of the media handling device which includes the media transport roller.
- the method further includes step of tracking the rotations of the media transport roller such that the coherent light beam would not need to be turned on until the media transport roller had completed a predetermined number of rotations.
- the wear of the media transport roller can be accurately detected so that the user can be alerted that the roller needs to be replaced and/or serviced.
- an optical sensor can be utilized to sense the coherent light beam when the media transport roller has worn out. The optical sensor can then send this information to the media transport roller wear indicating means or over the network where the user is alerted of the state of the media transport roller.
- the preferred media transport roller wear indicating system offers the following advantages: lightness in weight; ease of assembly and repair; excellent roller wear indicating characteristics; good stability; good durability; and excellent economy. In fact, in many of the preferred embodiments, these factors of lightness in weight, ease of assembly and repair, excellent roller wear indicating characteristics, and excellent economy are optimized to an extent that is considerably higher than heretofore achieved in prior, known media transport roller wear indicating systems.
- FIG. 1 is a schematic illustration of a media transport roller wear indicating system, according to one embodiment of the present invention.
- FIG. 2 is a schematic illustration of a media transport roller wear indicating system, according to another embodiment of the present invention.
- System 2 for indicating media transport roller wear is illustrated in FIG. 1.
- System 2 includes, in part, media handling device 3 , conventional media transport roller 4 , subsequent wear level 4 ′, coherent light beams 6 and 6 ′, conventional reflective material 8 , media transport roller wear alert 10 , and conventional media transport roller rotation counting means 12 .
- Media handling device 3 can be, but is not limited to, a paper handler, a printer, a copier, a facsimile machine, a printing device or the like.
- Coherent light beams 6 and 6 ′ are, preferably, laser beams or any other such suitable coherent light beam. However, it is to be understood that coherent light beam 6 can only be powerful enough to impinge upon media transport roller 4 and not adversely affect the physical characteristics of media transport roller 4 .
- reflective material 8 preferably, is any suitable, durable material that is capable of reflecting coherent light beams 6 and 6 ′ towards media transport roller wear alert 10 .
- the reflective material 8 could be eliminated if coherent beam 6 ′ could directly access media transport roller wear alert means 10 .
- Media transport roller wear alert 10 is any suitable device that can interact with coherent light beams 6 and 6 ′ such that when coherent light beams 6 and 6 ′ contact media transport roller wear alert 10 , media transport roller wear alert 10 will adequately notify the user of the state of wear of media transport roller 4 .
- media transport roller wear alert 10 can be a LED that changes colors based upon the amount of wear of media transport roller 4 .
- media transport roller wear alert 10 could include a visual display means (not shown) that provides a visual text to the user regarding the wear status of media transport roller 4 . It is to be understood that media transport roller wear alert 10 could include an optical sensor (not shown) to sense beam 6 ′ when media transport roller 4 has worn down. Media transport roller alert 10 can then send this information to the user.
- media transport roller rotation counting means 12 preferably, is any suitable, durable device that is capable of counting the number of rotations of media transport roller 4 .
- a coherent light beam 6 impinges upon a side of media transport roller 4 .
- coherent light beam 6 will not interact with reflective material 8 and media transport roller wear alert 10 .
- media transport roller wear alert 10 such as the showing of a “green” light in transport roller wear alert 10 , that media transport roller 4 is not adversely worn.
- coherent light beam 6 ′ passes over media transport roller 4 , reflects off of reflective material 8 and interacts with media transport roller wear alert 10 .
- media transport roller wear alert 10 such as showing of a “red” light in media roller wear alert 10 , that media transport roller 4 may be suffering from adverse wear and media transport roller 4 may need to be replaced or serviced.
- media transport roller rotation counting means 12 can be used to conventionally count the number of rotations of media transport roller 4 . In this manner, coherent light beam 6 would not have to be utilized until a predetermined number of rotations of media transport roller 4 have been achieved. This eliminates the need to continuously utilize coherent light beam 6 until needed in system 2 .
- a series of coherent light beams 6 and 6 ′ can be utilized to impinge upon media transport roller 4 .
- a series of coherent light beams 6 and 6 ′ can be used to inform the user of amounts of wear of media transport roller 4 .
- each one of the series of coherent light beams 6 and 6 ′ interacts with a separate element of media transport roller wear alert 10 . This allows the user to know how much media transport roller 4 has been worn and how long media transport roller 4 is expected to last. It can also be used to warn the user to be ready to replace media transport roller 4 once media transport roller 4 has been sufficiently worn down to subsequent wear level 4 ′.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
- This invention relates to the method and apparatus for indicating roller wear in a media handling device. Such structures of this type, generally, employ the use of a laser beam that is located adjacent to the media handling device roller. Initially, the roller material obstructs the laser beam. However, when the roller becomes worn out, the roller material no longer obstructs the laser beam and the beam shines on a piece of reflective material that is illuminated when the laser beam contacts it. This illumination will then be seen from the front of the media handling device, such as through the use of an LED. The laser beam can also activate an optical sensor that relays information to the user.
- Prior to the present invention, as set forth in general terms above and more specifically below, it is known, in the media handling device art, to make use of a device for determining roller wear. Exemplary of such prior art is U.S. Pat. No. 6,055,047 ('047) to A. Schweizer et al., entitled “Device for Determining the Degree of Wear of a Paper Transport Roller.” The '047 reference discloses a paper transport roller which comprises two layers having different degrees of reflection for electromagnetic radiation. When the outer layer is worn, the degree of reflection of the surface of the paper transport roller changes and the user is signaled that paper transport roller must be replaced. However, if a foreign object becomes attached to the transport roller of the '047 reference, this foreign object could adversely affect the reflection characteristics of the device. Also, if the paper transport roller does not wear evenly, one edge of the roller may have a different degree of reflection than the other edge of the roller and, possibly, adversely affect the reflection characteristics of the device. Therefore, a more advantageous paper transport roller wear indication system, then, would be presented if the system did not have to rely on a paper transport roller which comprises two layers having different degrees of reflection.
- It is apparent from the above that there exists a need in the art for a paper transport roller wear indication system which is lightweight through simplicity of parts and uniqueness of structure, and which these equals the wear indication characteristics of the known paper transport roller wear indication systems, but which at the same time employs a laser beam which will alert the user to the worn condition of the paper transport roller. It is a purpose of this invention to fulfill this and other needs in the art in a manner more apparent to the skilled artisan once given the following disclosure.
- Generally speaking, this invention fulfills these needs by providing a method for indicating media transport roller wear, wherein the method is comprised of steps of: impinging a coherent light beam upon a side of a media transport roller; and indicating when the media transport roller has worn down to a predetermined amount by causing the coherent light beam to pass over the media transport roller and interacting with a media transport roller wear indicating means.
- In certain preferred embodiments, the coherent light beam is a laser beam. Also, the media transport roller wear indicating means includes a piece of reflective material and an LED located on the front of the media handling device which includes the media transport roller. Finally, the method further includes step of tracking the rotations of the media transport roller such that the coherent light beam would not need to be turned on until the media transport roller had completed a predetermined number of rotations.
- In another further preferred embodiment, the wear of the media transport roller can be accurately detected so that the user can be alerted that the roller needs to be replaced and/or serviced.
- In still another further preferred embodiment, an optical sensor can be utilized to sense the coherent light beam when the media transport roller has worn out. The optical sensor can then send this information to the media transport roller wear indicating means or over the network where the user is alerted of the state of the media transport roller.
- The preferred media transport roller wear indicating system, according to this invention, offers the following advantages: lightness in weight; ease of assembly and repair; excellent roller wear indicating characteristics; good stability; good durability; and excellent economy. In fact, in many of the preferred embodiments, these factors of lightness in weight, ease of assembly and repair, excellent roller wear indicating characteristics, and excellent economy are optimized to an extent that is considerably higher than heretofore achieved in prior, known media transport roller wear indicating systems.
- The above and other features of the present invention, which will become more apparent as the description proceeds, are best understood by considering the following detailed description in conjunction with the accompanying drawings, wherein like characters represent like parts throughout the several views and in which:
- FIG. 1 is a schematic illustration of a media transport roller wear indicating system, according to one embodiment of the present invention; and
- FIG. 2 is a schematic illustration of a media transport roller wear indicating system, according to another embodiment of the present invention.
- With reference first to FIG. 1, there is illustrated one preferred embodiment for use of the concepts of this invention.
System 2 for indicating media transport roller wear is illustrated in FIG. 1.System 2 includes, in part, media handling device 3, conventionalmedia transport roller 4,subsequent wear level 4′,coherent light beams reflective material 8, media transportroller wear alert 10, and conventional media transport roller rotation counting means 12. - Media handling device3 can be, but is not limited to, a paper handler, a printer, a copier, a facsimile machine, a printing device or the like.
Coherent light beams coherent light beam 6 can only be powerful enough to impinge uponmedia transport roller 4 and not adversely affect the physical characteristics ofmedia transport roller 4. - Also,
reflective material 8, preferably, is any suitable, durable material that is capable of reflectingcoherent light beams roller wear alert 10. However, it is to understood that thereflective material 8 could be eliminated ifcoherent beam 6′ could directly access media transport roller wear alert means 10. - Media transport
roller wear alert 10, preferably, is any suitable device that can interact withcoherent light beams coherent light beams roller wear alert 10, media transportroller wear alert 10 will adequately notify the user of the state of wear ofmedia transport roller 4. For example, media transportroller wear alert 10 can be a LED that changes colors based upon the amount of wear ofmedia transport roller 4. Also, media transportroller wear alert 10 could include a visual display means (not shown) that provides a visual text to the user regarding the wear status ofmedia transport roller 4. It is to be understood that media transportroller wear alert 10 could include an optical sensor (not shown) to sensebeam 6′ whenmedia transport roller 4 has worn down. Mediatransport roller alert 10 can then send this information to the user. - Finally, media transport roller rotation counting means12, preferably, is any suitable, durable device that is capable of counting the number of rotations of
media transport roller 4. - During the operation of
system 2, acoherent light beam 6 impinges upon a side ofmedia transport roller 4. As can be seen in FIG. 1, as long asmedia transport roller 4 is not sufficiently worn down tosubsequent wear level 4′,coherent light beam 6 will not interact withreflective material 8 and media transportroller wear alert 10. In this manner, the user can be assured through media transportroller wear alert 10, such as the showing of a “green” light in transportroller wear alert 10, thatmedia transport roller 4 is not adversely worn. - Once
media transport roller 4 has been sufficiently worn down tosubsequent wear level 4′,coherent light beam 6′ passes overmedia transport roller 4, reflects off ofreflective material 8 and interacts with media transportroller wear alert 10. In this manner, the user can be assured through media transportroller wear alert 10, such as showing of a “red” light in mediaroller wear alert 10, thatmedia transport roller 4 may be suffering from adverse wear andmedia transport roller 4 may need to be replaced or serviced. - In another embodiment of the present invention, media transport roller rotation counting means12 can be used to conventionally count the number of rotations of
media transport roller 4. In this manner,coherent light beam 6 would not have to be utilized until a predetermined number of rotations ofmedia transport roller 4 have been achieved. This eliminates the need to continuously utilizecoherent light beam 6 until needed insystem 2. - In still another embodiment of the present invention, a series of
coherent light beams media transport roller 4. As shown in FIG. 2, a series ofcoherent light beams media transport roller 4. As can be seen in FIG. 2, each one of the series ofcoherent light beams roller wear alert 10. This allows the user to know how muchmedia transport roller 4 has been worn and how longmedia transport roller 4 is expected to last. It can also be used to warn the user to be ready to replacemedia transport roller 4 oncemedia transport roller 4 has been sufficiently worn down tosubsequent wear level 4′. - Once given the above disclosure, many other features, modifications or improvements will become apparent to the skilled artisan. Such features, modifications or improvements are, therefore, considered to be a part of this invention, the scope of which is to be determined by the following claims
Claims (15)
Priority Applications (1)
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US10/121,149 US6741342B2 (en) | 2002-04-10 | 2002-04-10 | Using a laser beam to indicate roller wear |
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US10/121,149 US6741342B2 (en) | 2002-04-10 | 2002-04-10 | Using a laser beam to indicate roller wear |
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US20030193665A1 true US20030193665A1 (en) | 2003-10-16 |
US6741342B2 US6741342B2 (en) | 2004-05-25 |
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US10/121,149 Expired - Fee Related US6741342B2 (en) | 2002-04-10 | 2002-04-10 | Using a laser beam to indicate roller wear |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2523786A (en) * | 2014-03-05 | 2015-09-09 | Itw Cs Uk Ltd | Roller |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101636235B (en) * | 2007-02-20 | 2011-09-07 | 西门子公司 | Cylinder and/or roller and a method for producing a cylinder and/or a roller |
US7795555B2 (en) * | 2007-06-08 | 2010-09-14 | Caterpillar Inc | Process for determining whether used friction elements may be returned to service |
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US3640109A (en) * | 1968-04-23 | 1972-02-08 | Ashlow Steel & Eng Co | Methods of and apparatus for setting roller guides in rod mills |
US3749500A (en) * | 1970-12-23 | 1973-07-31 | Gen Electric | Optical caliper and edge detector-follower for automatic gaging |
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US4417147A (en) * | 1981-02-27 | 1983-11-22 | The Boeing Company | Method and apparatus for measuring runout in a cylindrical object |
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JP3073822B2 (en) | 1991-11-20 | 2000-08-07 | キヤノン株式会社 | Sheet feed roller and recording apparatus using the sheet feed roller |
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US3640109A (en) * | 1968-04-23 | 1972-02-08 | Ashlow Steel & Eng Co | Methods of and apparatus for setting roller guides in rod mills |
US3604940A (en) * | 1969-08-04 | 1971-09-14 | Laser Systems Corp | Radiant energy inspection system for rotating objects |
US3749500A (en) * | 1970-12-23 | 1973-07-31 | Gen Electric | Optical caliper and edge detector-follower for automatic gaging |
US4031368A (en) * | 1972-04-17 | 1977-06-21 | Verkstadsteknik Ab | Adaptive control of cutting machining operations |
US3922094A (en) * | 1973-02-14 | 1975-11-25 | Verkstadsteknik Ab | Apparatus for measuring diameter, out-of-roundness and vibration of an object to be measured |
US4576482A (en) * | 1979-09-07 | 1986-03-18 | Diffracto Ltd. | Electro-optical inspection |
US4417147A (en) * | 1981-02-27 | 1983-11-22 | The Boeing Company | Method and apparatus for measuring runout in a cylindrical object |
US5805291A (en) * | 1996-08-14 | 1998-09-08 | Systronics, Inc. | Traversing thickness measurement apparatus and related method |
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Cited By (1)
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GB2523786A (en) * | 2014-03-05 | 2015-09-09 | Itw Cs Uk Ltd | Roller |
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